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lexigolds9

  • 3 years ago

f(-6)=???? f(x)=square root of 5-x

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  1. AccessDenied
    • 3 years ago
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    \( f(x) = \sqrt{5 - x} \) This is it, correct? So, f(-6) means x = -6 in our function. Have you tried replacing x for -6 in the function?

  2. lexigolds9
    • 3 years ago
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    yes and it comes as a decimal .. 3.316

  3. AccessDenied
    • 3 years ago
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    Hmm, that seems about right. I might leave it with the radical, myself, depending on if the question asks us to round or not. :)

  4. lexigolds9
    • 3 years ago
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    it wants a radical

  5. lexigolds9
    • 3 years ago
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    ? i dont know how to do it

  6. AccessDenied
    • 3 years ago
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    \( f(-6) = \sqrt{5 - (-6)} \) \( = \sqrt{5 + 6} \) \(= \sqrt{11} \) <--- this is the radical, I think I'd leave it there if you're not asked to round \( \approx 3.316\) <--- this is your answer, which is the same.

  7. AccessDenied
    • 3 years ago
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    \(\sqrt{11}\) is just a little more "accurate". :)

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